How To Fix /CCIS/TAX634 - Non-existent tag or attribute: expression '&' in formula '&' of item '&'

/CCIS/TAX634 - Overview

• Message type: E = Error

• Message class: /CCIS/TAX -

• Message number: 634

• Message text: Non-existent tag or attribute: expression '&' in formula '&' of item '&'

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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/CCIS/TAX634 - Details

• The SAP error message /CCIS/TAX634 Non-existent tag or attribute: expression '&' in formula '&' of item '&' typically occurs in the context of tax calculation or configuration within the SAP system, particularly when dealing with tax codes, tax calculation formulas, or tax-related configurations in the SAP Convergent Charging (SAP CC) or similar modules.
  
  Cause:
  
  Invalid Formula: The error indicates that there is an invalid expression in a formula used for tax calculation. This could be due to a missing or incorrectly defined tag or attribute in the formula.
  
  Configuration Issues: The configuration for tax calculation may not be set up correctly, leading to references to non-existent tags or attributes.
  Data Integrity Issues: There may be issues with the data being processed, such as missing or incorrect entries in the relevant tables.
  Version Compatibility: If there have been recent updates or changes to the system, there may be compatibility issues with existing formulas or configurations.
  
  
  Solution:
  
  Review the